1). Planets are
| A). luminous heavenly bodies revolving around a star |
| B). non-luminous heavenly bodies |
| C). luminous heavenly bodies that twinkle |
| D). luminous heavenly bodies that do not twinkle |
|
2). Natural radioactivity was discovered by
| A). Marie Curie |
| B). Ernest Rutherford |
| C). Henri Becquerel |
| D). Enrico Fermi |
|
3). Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this?
Diffusion
Refraction
Internal reflection
| A). I, II and III |
| B). I and II |
| C). II and III |
| D). I and III |
|
4). One should not connect a number of electrical appliances to the same power socket because
| A). this can damage the appliances due to overloading |
| B). this can damage the domestic wiring due to overloading |
| C). this can damage the electrical meter |
| D). the appliance will not get full voltage |
|
5). Large astronomical telescopes always use as objective
| A). lens |
| B). mirror |
| C). combinations of lenses |
| D). None of the above |
|
6). Identify the vector quantity from the following
| A). Heat |
| B). Angular momentum |
| C). Time |
| D). Work |
|
7). Sound of frequency below 20 Hz is called
| A). audio sounds |
| B). infrasonic |
| C). ultrasonic |
| D). supersonics |
|
8). RADAR is used for
| A). locating submerged submarines |
| B). receiving a signals in a radio receiver |
| C). locating geostationary satellites |
| D). detecting and locating the position of objects such as aeroplanes |
|
9). Materials for rain-proof coats and tents owe their water-proof properties to
| A). surface tension |
| B). viscosity |
| C). specific gravity |
| D). elasticity |
|
10). Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
| A). move towards A |
| B). move towards B |
| C). move at right angles to the line joining A and B |
| D). remain at rest |
|
